Top undrafted players in NFL history

Many memorable players will come out of the 2013 NFL draft, which runs Thursday through Saturday, but some of the best players in NFL history went undrafted. Here's a list of the most accomplished undrafted players in franchise history for each of the 32

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Pittsburgh Steelers: LB James Harrison, Kent State. The 5-time Pro Bowler and 2-time All-Pro helped the Steelers win the Super Bowl in '06 and was the NFL's Defensive Player of the Year in '08. Helped Steelers win another championship that season by returning Kurt Warner's pass 100 yards for a TD. Old-timers choice; CB Jack Butler, St. Bonaventure, and, more recently, DB Donnie Shell, South Carolina State.

PHOTO: Harrison runs through the line against the Cincinnati Bengals at Paul Brown Stadium on Oct. 23, 2005 in Cincinnati.

Joe Robbins/Getty Images

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Pittsburgh Steelers: LB James Harrison, Kent State. The 5-time Pro Bowler and 2-time All-Pro helped the Steelers win the Super Bowl in '06 and was the NFL's Defensive Player of the Year in '08. Helped Steelers win another championship that season by returning Kurt Warner's pass 100 yards for a TD. Old-timers choice; CB Jack Butler, St. Bonaventure, and, more recently, DB Donnie Shell, South Carolina State.

PHOTO: Harrison runs through the line against the Cincinnati Bengals at Paul Brown Stadium on Oct. 23, 2005 in Cincinnati.